59 results about "Fork tuning" patented technology

The utility model discloses a multi-tuning fork mechanical leakage listening rod, which relates to the technical field of pipeline detection and comprises a supporting rod, a mounting rod is mounted at the top of the supporting rod, a leakage listening assembly is arranged at the bottom of the supporting rod, and a connecting rod for adjusting the use length is arranged at the top of the supporting rod. And sound transmission rods are arranged in the connecting rod and the mounting rod. The beneficial effects of the utility model are that the first flange plate and the second flange plate are fixed through the bolts, and the connecting rod can be installed between the supporting rod and the installation rod, thereby achieving the effect of adjusting the use length, avoiding the problem of insufficient length during the detection of a deeper underground pipeline, and improving the detection precision through arranging a plurality of groups of tuning forks. The sound frequency can be distinguished more finely, the sensitivity and accuracy of water leakage detection are improved, the tuning fork transmits sound to the sound transmission rod through the sound listening rod, and the sound amplification cover amplifies the sound transmitted by the sound transmission rod.

The utility model provides a multifunctional tuning fork device for ear-nose-throat head and neck surgery, and relates to the technical field of medical instruments, the multifunctional tuning fork device mainly comprises a tuning fork, a connecting rod assembly and a hammer, the tuning fork is Y-shaped, the connecting rod assembly is fixedly arranged at the non-bifurcated end, the hammer is arranged at the tail end of the connecting rod assembly, and the connecting rod assembly is connected with the hammer. The connecting rod assembly comprises a connecting rod, a first handle and a second handle which are arranged in sequence, one end of the connecting rod is fixedly connected with the tuning fork, the opposite end of the connecting rod is detachably connected with one end of the first handle, the opposite end of the first handle is detachably connected with one end of the second handle, and a sound hammer is fixedly arranged at the opposite end of the second handle; according to the tuning fork device, when the tuning fork device is not used, the second handle and the first handle are connected together, so that forgetting to carry the tuning fork can be prevented, when the tuning fork device is used, the second handle and the first handle are detached, the tuning fork and the hammer are used in an impact mode, and a doctor can use the tuning fork device conveniently.

The invention belongs to the technical field of lead-bismuth reactors, and particularly relates to a lead-bismuth reactor control rod assembly positioning structure. The control rod cluster comprises an upper end positioning structure, a lower end positioning structure, a tuning fork type upper end plug and a tuning fork type lower end plug, the control rod cluster is located between the upper end positioning structure and the lower end positioning structure, the control rod cluster comprises 19 control rods, the upper end positioning structure is connected with the tuning fork type upper end plug in a matched mode, and the lower end positioning structure is connected with the tuning fork type lower end plug in a matched mode. The upper end positioning structure and the lower end positioning structure are located at the two ends of the control rod bundle and jointly achieve positioning of the control rod. On the basis of meeting the requirement of flow distribution uniformity of the control rod assembly coolant and overcoming transverse shaking of the control rod, the lead-bismuth coolant uniformly flows through the rod cluster type control rod and the transverse impact of the coolant on the control rod is reduced on the basis of realizing rapid assembly of the control rod assembly.

A support for calibration of a tuning fork type online densimeter comprises a base and a support body fixedly installed on the base, a housing is fixedly installed on the side wall of the support body, a lifting mechanism is installed in the housing and comprises a servo motor, and the output end of the servo motor is connected with a ball screw arranged in the vertical direction through a flexible coupler. A movable nut of the ball screw is connected with a supporting plate, a tray is mounted at the end part of the supporting plate, a mounting hole for mounting the tuning fork type online densimeter is formed in the tray, a through hole corresponding to the mounting hole is formed in the supporting plate, an adjusting bolt is arranged on the bottom surface of the supporting plate, and the adjusting bolt penetrates through the supporting plate and is propped against the tray. According to the utility model, the height of the tuning fork type on-line densimeter can be adjusted according to the length of the sensor at the lower end of the tuning fork type on-line densimeter, so that the tuning fork type on-line densimeter can meet the calibration requirements of tuning fork type on-line densimeters with different sizes.

The application discloses an anti-disturbance tuning fork densimeter probe for high-viscosity fluid, which comprises a bearing sleeve, a mounting plate fixed in the bearing sleeve, two groups of butterfly spring sets symmetrically arranged at the bottom end of the mounting plate, a bearing plate fixed at one end of the butterfly spring set, a recess cavity formed in the bearing plate, a piezoelectric ceramic piece mounted in the recess cavity, and a tuning fork probe fixed on the piezoelectric ceramic piece. The anti-disturbance mechanism is composed of a disturbance shielding sleeve, a spiral flow guide piece, a spiral flow channel and a polyurethane buffer layer. During the measurement process, the disturbance shielding sleeve guides the high-viscosity fluid to flow through the tuning fork probe stably through the spiral flow channel, so that the direct impact of the flow velocity fluctuation on the tuning fork probe is avoided, meanwhile, the polyurethane buffer layer can absorb the fluid impact energy, and the double anti-disturbance effect can be realized by the combination of the two, the measurement precision of the device is improved, and the device has high use performance.

The embodiment of the invention discloses a self-cleaning tuning fork sensor. The self-cleaning tuning fork sensor comprises a tuning fork sensor and a controller, the tuning fork sensor comprises a tuning fork body and a vibration assembly. The controller comprises a self-cleaning module; the self-cleaning module is electrically connected with the vibration assembly and used for executing cleaning operation. Wherein the cleaning operation comprises the step of controlling the vibration assembly to drive the tuning fork body to vibrate so as to remove dirt attached to the surface. According to the embodiment of the invention, the self-cleaning module is added for removing dirt on the surface of the tuning fork body, manual disassembly for cleaning is not needed, the manual maintenance cost is reduced, the shutdown maintenance time is shortened, and meanwhile, the detection precision stability and long-term operation reliability of the sensor are enhanced.

The invention discloses a micro-electro-mechanical gyroscope which comprises a plurality of tuning forks of the same structure, and each tuning fork of the tuning forks comprises a first frame, a second frame and a third frame, a second frame adjacent to the first frame; a Coriolis force unit coupled to the first frame and the second frame, respectively; a drive unit and a detection unit, the drive unit being located in one of the first frame and the second frame, the detection unit being located in the other of the first frame and the second frame; wherein the first frames in the adjacent tuning forks are coupled together, and the second frames in the adjacent tuning forks are coupled together.

The application discloses a processing technology of a tuning fork crystal, which comprises glass beads, tuning fork pieces arranged on the glass beads, shells arranged on the tuning fork pieces and lead wires arranged at the bottom of the glass beads, the tuning fork pieces are ST cut type, silver-plated electrodes are arranged on the tuning fork pieces, and the silver-plated electrodes are designed in a rotary mode. The unique ST cut type is adopted instead of the traditional DT cut type, so that a higher frequency range can be obtained. Since the vibration mode of the ST cut type is a torsional vibration mode, the electrodes are designed in a rotary mode, so as to conform to the oscillation mode of the ST cut type, thereby ensuring that the crystal piece can work stably after starting to vibrate. By adopting the unique ST cut type, the traditional tuning fork structure is retained, the rotary electrodes are utilized to promote the crystal piece to start to vibrate smoothly, and the torsional vibration mode maximally realizes the frequency which cannot be reached by the conventional tuning fork crystal.

The invention provides a tuning fork sensor integrated measuring device, which comprises a test base and a plurality of test assemblies, and the plurality of test assemblies are arranged on a test mounting surface of the test base in an array. The test assembly comprises a mounting base, a tuning fork sensor, a spring needle assembly, a spring needle mounting seat, a test flip cover, a buckle assembly, a measurement and control circuit, a bottom plate, a shock absorber assembly and a shell, and through specific design of the mounting base and the spring needle assembly, stable assembly and electrical connection of the sensor are realized; and meanwhile, a mode of integrally mounting the base in a vibration reduction manner and fixing the sensor in a buckling manner is adopted, so that external interference is reduced, and test accuracy is improved.

The utility model belongs to the technical field of precision sensors, and discloses a novel silicon resonance accelerometer structure based on lever difference. The structure comprises an upper layer, a middle layer and a lower layer, the middle layer is a monocrystalline silicon micro-mechanical structure and comprises a mass block, an amplification lever structure, a double-end fixed tuning fork type resonator and the like; through a central anchor point and two amplification lever structures with opposite force transmission directions, the stress difference of the two resonators is realized, the number of supporting anchor points is reduced, the resonators are in a thermal expansion free state under a temperature change working condition, the thermal stress influence is reduced, and the temperature performance is improved; meanwhile, the area of the stress isolation frame is reduced, the difficulty of the processing technology is reduced, and the engineering application of the silicon resonance accelerometer to an ultra-precise system is promoted.

The utility model belongs to the technical field of coal-bed gas development, and discloses a coal-bed gas shaft pulverized coal migration and settlement test system which comprises a simulation shaft which comprises an inner-layer pipe column and an outer-layer pipe column, an annular space part is arranged between the inner-layer pipe column and the outer-layer pipe column, and the annular space part is communicated with the inner-layer pipe column. The simulation shaft can rotate and incline around the center of the simulation shaft within a preset angle; the liquid injection system is connected with the first end of the annulus part and used for inputting pulverized coal slurry into the annulus part; the gas injection system is connected with the second end of the annulus part and used for inputting simulation gas into the annulus part, and the simulation gas and the pulverized coal slurry can flow to the inner-layer pipe column from the annulus part and return to the liquid injection system; the tuning fork resonance sensor is arranged in the simulation shaft in a penetrating mode, and a fork body is located in the inner-layer pipe column and used for detecting the vibration frequency when the pulverized coal slurry and the simulation gas flow in the inner-layer pipe column. The device can simulate the migration and settlement of pulverized coal in wellbores of different well types.

The embodiment of the present application relates to a tuning fork type piezoelectric vibration piece and an oscillator, which are used to improve Q value. The tuning fork type piezoelectric vibration piece comprises a base and two vibration arm parts extending from one end of the base, the two vibration arm parts are symmetrically arranged, and the polarities of the driving electrodes at corresponding positions are opposite; for each vibration arm part: a driving groove is arranged on the first main surface of the vibration arm part, and an inner wall driving electrode is arranged on the inner wall of the driving groove; a side wall driving electrode is arranged on the side wall of the vibration arm part; at least one planar driving electrode is arranged on the second main surface of the vibration arm part corresponding to the position of the driving groove along the width direction of the vibration arm part; and the first main surface and the second main surface are two opposite surfaces.

The invention relates to a quartz crystal resonator laser welding process and laser welding equipment. The quartz crystal resonator laser welding process comprises the following steps that S100, bases are assembled into a lower welding jig one by one after being sorted; s200, the tuning fork connecting end of each base is evenly coated with soldering paste; s300, the tuning fork pieces are assembled into an upper welding jig one by one after being sorted, the upper welding jig is assembled into a lower welding jig to form a welding jig, and the lower end of each tuning fork piece in the welding jig sinks into the welding paste and is transversely arranged between the two leads of the base; s400, the welding jig is conveyed into a welding station in laser welding equipment to be fixed, and laser heads are evenly distributed on the two sides, located on the welding jig, in the laser welding equipment; and S500, the laser head conducts laser welding on the tuning fork connecting ends of the base one by one at the preset welding interval, and the two electrode faces at the lower end of the tuning fork piece are welded and fixed to the two leads on the base correspondingly. The method has the effect of reducing energy consumption.

An improved handle for hammers and other swing-handle tools designed to reduce the shock of impact during use. The handle features a longitudinal gap running approximately halfway up from the bottom end of the handle, creating a tuning fork-like structure that flexes upon impact. This design significantly reduces recoil and vibration, offering improved comfort, control, and protection for the user's hand, wrist, and arm. The handle is made of traditional wood materials and is compatible with standard hammer heads.

The utility model is suitable for the technical field of alcohol concentration detection, and provides a concentration detection device. The detection rod is fixedly connected with a tuning fork and can detect the concentration of fluid such as alcohol, a flange plate for fixing the detection rod is fixedly connected above the detection rod, the detection device and the detection port can be fixed through the flange plate, and a gauge outfit for displaying detection data is fixedly connected above the flange plate. Fluid concentration data detected by the detection rod is displayed through the gauge outfit; the lower portion of the flange plate is sleeved with a sealing piece for sealing the contact face of the detection rod, the flange plate is fixedly connected with an elastic piece abutting against the sealing piece and a pushing piece which drives the elastic piece to contract and is rotationally connected with the flange plate, the sealing piece can improve the sealing effect of the contact face of the detection device and the detection opening, and volatilization and leakage of fluid are avoided.

To provide a tuning fork type piezoelectric element capable of achieving miniaturization or improvement of impact resistance required in a tuning fork type piezoelectric vibrator, and to provide a method of manufacturing the same.SOLUTION: The front principal surface excitation electrodes 5 and 6 and the back principal surface excitation electrodes 7 and 8 of the vibration arms 3132 and of the tuning-fork type piezoelectric element 1 are electrically connected via the through-holes 141142 and penetrating from the front surface to the back surface, and the wiring pattern 13 electrically connecting the front principal surface excitation electrode 5 and the bonding electrode 11 formed on the base 30 and the wiring pattern 18 electrically connecting the front principal surface excitation electrode 6 and the side surface excitation electrode 9 are provided on the front surface of the base 30. The bonding electrode 11 and the side-surface excitation electrode 10 are connected to each other on the side surface where the base 30 and the vibrating arm 32 are coupled to each other, the bonding electrode 12 and the side-surface excitation electrode 9 are connected to each other on the side surface where the base 30 and the vibrating arm 31 are coupled to each other, and no wiring pattern corresponding to the wiring pattern 13,18 is provided on the back surface on which the bonding electrode 11,12 is formed.SELECTED DRAWING: Figure 1

Provided is a tuning fork type piezoelectric vibrating piece (2). A pair of vibrating arm portions (21, 22) extending in a first direction from an end portion (201) on one side of the base portion (20); and an extended base portion (23) protruding in a direction opposite to the first direction from an end portion (202) on the other side of the base portion (20). And an extended section (24) extending from the extended base section (23) in at least one of a second direction perpendicular to the first direction, the base section (20) having a reinforcing section (26) in a narrowed section (250) formed by the extended base section (23), the base section (20), and the extended section (24), the reinforcing section (26) being configured so as to extend from the narrowed section (250) in the second direction. An end surface (261) in the second direction is configured to be approximately linear in a plan view.

The invention provides a motor connecting plate metal injection molding packaging and tuning fork assembling technology, and relates to the field of vehicle-mounted small motor annular metal injection molding part machining. Aiming at the requirement that an annular injection molding part needs to integrate a terminal, a lining, a tuning fork insert and a temperature sensor, the technology is matched with an insert positioning structure through a mold special positioning assembly; a tuning fork insert multi-sheet stamping riveting design is combined, the insert layout precision and connection stability are improved, a sensor mounting groove and a tuning fork assembly structure are reserved in the injection molding stage, a temperature sensor is welded and fixed, and a tuning fork is positioned and assembled through clamping. The process has the beneficial effects that the layout precision of the annular injection molding insert is improved, the riveting tuning fork insert and the body are connected more firmly, and the riveting tuning fork insert is not prone to failure under vibration; a sensor groove and a tuning fork structure are reserved, the process is saved, the body is protected, the sensor is welded more stably, the tuning fork is assembled quickly and accurately, and cost is reduced and efficiency is improved.

The application discloses a two-component gas detection system and method based on photo-induced thermoelastic spectrum. The detection system comprises a laser generating device, the laser generating device is connected with a gas chamber, the gas chamber is connected with a sensing device, the sensing device is connected with an output device, the laser generating device comprises two sets of DFB driving controllers and DFB lasers, the two sets of DFB driving controllers and the DFB lasers are jointly connected with a coupler, and the coupler is connected with the gas chamber; the sensing device comprises a first tuning fork and a second tuning fork which are oppositely arranged, adjacent fork arms of the first tuning fork and the second tuning fork are close to each other but not in contact with each other, a laser beam output from the gas chamber passes between the adjacent fork arms of the first tuning fork and the second tuning fork and hits the first tuning fork and the second tuning fork at the same time. A collimator is arranged between the gas chamber and the sensing device. The output device comprises a preamplifier, the preamplifier is connected with a phase-locked amplifier, the phase-locked amplifier is connected with a data collector, and the data collector is connected with a computer. The application has simple and reasonable structure and can simultaneously complete detection of two-component gas.

The utility model discloses a multifunctional composite sensor, and belongs to the technical field of sensors. Comprising a tuning fork density sensor, a temperature and liquid level integrated sensor, a signal processing module and a threaded base used for installing the tuning fork density sensor and the temperature and liquid level integrated sensor. The upper part of the threaded base is provided with a sleeve for protecting a wire pipe, and the threaded base is provided with a pressure guide hole; the temperature and liquid level integrated sensor is a sensor with a temperature compensation function and is packaged in the threaded base; the multifunctional composite sensor is installed at the bottom or on the side wall of the container and is free of a movable component, the liquid level, temperature and density measuring device is simple in design, convenient to install, stable in measurement and high in precision, liquid level values, temperature values and density values are measured in real time, and the problems that existing wiring is tedious, maintenance is complex, and many fault points exist can be effectively solved.

This invention discloses a method and system for identifying abnormal tuning fork limit signals, relating to the field of data processing for industrial sensor signals. The method includes: applying an active excitation cutoff operation to the piezoelectric drive chip of the tuning fork sensor at a preset trigger frequency and cutting off the electrical excitation signal input within the excitation cutoff time window; acquiring the free decay waveform of the piezoelectric receiving chip; extracting the energy decay asymmetry, the absolute total energy integral value across the window, and the phase drift variation coefficient to construct a multi-dimensional feature vector; inputting this vector into a machine learning-based media state classification model for prediction, obtaining classification results for empty state, normal full state, and vortex street self-excited full abnormal state; outputting the corresponding limit signal based on the classification results and triggering an alarm when an abnormality occurs. This invention solves the problem of missed full-material alarms caused by Karman vortex street resonance lock-up that may be caused by high-velocity media scouring the tuning fork.

The application discloses a low-stress MEMS resonant accelerometer, which is processed by using an SOG process, and is characterized in that: an upper layer is an accelerometer micro-mechanical sensitive structure made of monocrystalline silicon, which is used for sensing external acceleration, and gold is deposited on the upper layer as an electrode, which is used for inputting and outputting signals; a lower layer is a glass substrate, which is used for supporting the micro-mechanical sensitive structure of the upper layer. By symmetrically arranging anchor points for supporting the micro-mechanical sensitive structure and stress release rings, residual stress generated in the direction of a sensitive axis of a tuning fork resonator due to the mismatch of thermal expansion coefficients of materials in a processing process is reduced. A thermal deformation matching frame is arranged to reduce thermal stress generated on the tuning fork resonator due to the inconsistent expansion or shrinkage deformation of each part of the micro-mechanical sensitive structure in a working temperature change process. The application reduces the residual stress generated in the processing process and the thermal stress generated in the working environment change of the sensor, thereby reducing the influence of temperature on the output frequency of the resonator and improving the long-term stability of the output of the resonant accelerometer.

The utility model relates to a multifunctional dispenser which comprises a shell and a main body, and the main body further comprises a switch, a comb, a clamping hole, a ratchet wheel, a first fixing device, a second fixing device, a first spring and a second spring. The switch is rotationally connected to the main body through a first fixing device; a bulge is arranged on the switch; the comb is rotationally connected to the main body through a second fixing device; the second spring is fixed on the main body through a third fixing device; one end of the first spring is hinged to the switch; the shell is provided with a first groove and a second groove. And a hole is formed in the ratchet wheel. And a tuning fork is arranged on the main body. Functional barriers of traditional shooting equipment are broken through, universal compatibility of three kinds of equipment including a slingshot, a bow and a fish shooting dart is achieved, a user can flexibly switch different motion scenes without repeatedly purchasing a special release device, meanwhile, the small appearance is combined with disc playing level materials, portability and decompression attribute are achieved, and the effect that one device has multiple purposes is achieved.

The utility model relates to the technical field of sensor installation, and specifically relates to a force-electric coupling resonant tuning fork sensor installation structure. The device comprises an adjusting assembly, the adjusting assembly comprises a fixing plate, two arc-shaped fixing holes are formed in the top side of the fixing plate and are far away from each other, two connecting plates are fixedly connected to the positions, close to one side, of the top side of the fixing plate, and the two connecting plates are far away from each other; and the same sides of the two connecting plates are fixedly connected with limiting strips. According to the utility model, because the electrical coupling resonant tuning fork sensor is poor in height and angle adjustment, through the arrangement of the two connecting plates, the threaded rod vertically moves between the two connecting plates, the height adjustment can be carried out, and the angle adjustment can be carried out before the first extrusion part is rotated to extrude the two limiting strips. Therefore, the problems of height and angle can be solved, and the problem that the force-electric coupling resonant tuning fork sensor cannot be accurately installed at a corresponding position can be solved.

The invention relates to an antenna device. The antenna device comprises a first substrate, a second substrate, an excitation unit, a plurality of rectangular radiation units, a plurality of circular radiation units and an impedance matching unit, the first substrate has a first bottom surface and a first top surface opposite to each other. The second substrate is arranged on the first substrate and is provided with a second bottom surface and a second top surface which are opposite to each other. The second bottom surface is connected with the first top surface. The excitation unit is arranged on the first bottom surface and comprises a tuning fork-shaped excitation body, a strip-shaped excitation body and a grid-shaped excitation body. The tuning-fork-shaped excitation body comprises a handle part and a forked part. The handle part, the strip-shaped excitation body and the grid-shaped excitation body are connected to the branch part. The rectangular radiation units, the circular radiation units and the impedance matching unit are arranged on the second top surface. The rectangular radiation units surround the circular radiation units. The circular radiation units surround the impedance matching unit.

The application relates to a full-coupling MEMS tuning fork gyroscope, comprising: an anchor point structure, a suspension structure being suspended on the anchor point structure; wherein the suspension structure comprises two symmetrically arranged suspension units, each suspension unit comprising a driving mass, a Coriolis mass and a sensitive mass, the two sensitive masses being connected through a sensitive coupling structure between opposite surfaces of the two sensitive masses, and the free ends of the two driving masses being connected through a driving coupling structure. The MEMS tuning fork gyroscope designed by the application adopts a full-coupling structure, so that the response amplitudes of the driving mode and the sensitive mode of the gyroscope are closer, the frequency difference between the two modes is effectively reduced, and the sensitivity of the gyroscope is effectively enhanced.

The application discloses a tuning fork resonator production method, and a production line of the tuning fork resonator comprises the following work stations arranged in sequence along a production direction: a production work station for processing wafer raw materials into wafer pieces; a first measuring work station; a folding work station for folding tuning fork wafers on the wafer pieces; an assembling work station for fixing the tuning fork wafers to product bases; a second measuring work station; and a packaging work station for vacuum packaging the products. The first measuring work station can quickly consume vibration energy of the tuning fork wafers, so that the vibration of the tuning fork wafers in the area is ended, the probe can directly measure the next tuning fork wafer, and the measuring efficiency is greatly improved. The second measuring work station can simulate a vacuum environment after packaging to measure the frequency and resistance of the product, so that defective products are selected, and the defective product rate is reduced.

The invention provides a method for optimizing the temperature performance of a quartz tuning fork gyroscope, which comprises the following steps of: introducing an orthogonal deflection angle in a demodulation process to obtain that the ratio of an available orthogonal scale to an in-phase scale can represent the size of an incomplete orthogonal deflection angle of a gyroscope output signal and a reference demodulation signal; and when the actually measured orthogonal deflection angle is obtained, a corresponding physical model is established on the basis of mathematical rules of different deflection angles and temperatures, and real-time monitoring and compensation of the deflection angles at different temperatures are realized, so that when the orthogonal deflection angle is introduced later, the deflection angles at different temperatures can be monitored and compensated in real time. The phase of the reference demodulation signal is orthogonal to the phase of the gyroscope signal, so that the zero offset variation in the full-temperature range is improved, and the hysteresis effect of the gyroscope in the full-temperature range is reduced.

The present application relates to the technical field of sensor, and provides a resonant pressure sensor and a manufacturing method thereof, the resonant pressure sensor comprising: a cap layer, a pressure sensing layer and a resonant tuning fork assembly, the pressure sensing layer is used for sensing the change of input force, the pressure sensing layer is connected with the cap layer, a vacuum chamber is formed between the cap layer and the pressure sensing layer, the pressure sensing layer is provided with at least two bosses, and the bosses are located in the vacuum chamber; the bosses are arranged in the vacuum chamber, the bosses are arranged on opposite sides of the resonant tuning fork assembly, the resonant tuning fork assembly is used for connecting a first external circuit, the resonant tuning fork assembly comprises a tuning fork beam assembly, a first folding beam and a second folding beam, one end of the tuning fork beam assembly is connected with the boss through the first folding beam, and the other end of the tuning fork beam assembly is connected with the boss through the second folding beam. The first folding beam and the second folding beam can absorb energy, and vibration isolation is realized.

The utility model discloses a kind of level transmitter shell structures, involve tuning fork liquid level switch application field, including tuning fork liquid level switch shell and tuning fork sensor, tuning fork liquid level switch shell one end is equipped with second outer thread, the outer thread of second outer thread is connected with second nut, the side of second nut is provided with extension block, recess is equipped in the side of extension block, the outside of tuning fork sensor is equipped with compression ring, the side of compression ring is provided with metal hook.The utility model is equipped with second outer thread in the one end of tuning fork liquid level switch shell, the outer thread of second outer thread is connected second nut, the outside of tuning fork sensor is equipped with compression ring, compression ring is connected by metal hook and the second nut installed at tuning fork liquid level switch end portion, and then by metal hook when second nut is twisted, tightening compression ring will be pulled, make compression ring firmly compress tuning fork sensor whole, to reduce the risk that circuit equipment in tuning fork liquid level switch shell is damp.